Subject Alternative Name (SAN) SSL certificate, where are the strange names coming from?

Question

Digital certificates

I regularly study records and information about certificates from https://crt.sh
For example, according to Habr.ru https://crt.sh/?id=282759903
In section X509v3 Subject Alternative Name:
DNS:habr.ru
DNS:www are specified. habr.ru
Everything seems to be clear here, and the Subject section specifies organizationalUnitName = PositiveSSL
However, the same certificates that have organizationalUnitName = PositiveSSL Multi-Domain in the Subject section
Those have a complete scatter of names, like dns, the resource has one name, and it is working , but the X509v3 Subject Alternative Name: section is full of different resource names that, when visited, visually have nothing to do with the main name at all.
As far as I understand, alternative names are created when creating a certificate, conditionally, by the owner, or after all, you should not trust the records from the X509v3 Subject Alternative Name, should you not associate them with the main domain?

Answer 1

multi-domain certificates allow you to serve completely different domains.
and add them as needed.